A study on the intergranular corrosion and pitting resistance of Inconel 625 coating by PTA-P

Lorenzoni, Raphael Amorim; Gasparini, R.; Santos, Armando Martins dos; Luz, Temístocles de Sousa; Macêdo, Marcelo Camargo Severo de

doi:10.1080/1478422x.2018.1533677

Cited by 13 publications

(3 citation statements)

References 16 publications

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“…Pengujian komposisi unsur lapisan CRA dilakukan untuk menentukan nilai Pitting Resistance Equivalent Number (PREN) yang menunjukkan ketahanan terhadap pitting corrosion pada paduan baja dan nikel [11], [12]. Pengujian dilakukan dengan Optical Emission Spectrometer (OES) Thermo Scientific ARL 3460 Metal Analyzer.…”

Section: Metodeunclassified

Pengujian Mekanis dan Korosi pada Weld Overlay Pipa API 5L X65 Hasil Pengelasan GTAW

Ariyanto,

Wibowo,

Rossbandrio

et al. 2023

JATRA

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Pelapisan (cladding) material corrosion resistant alloy (CRA) menggunakan Inconel 625 memadukan properti ketahanan korosi Inconel 625 dan kekuatan (high strength) pipa baja API 5L X65. Sampel lapisan CRA difabrikasi dengan pengelasan Pulsed Gas Tungsten Arc Welding (GTAW). Filler metal ERNiCrMo-3 dengan dua merk yang berbeda, yaitu RW625 dan NM625, digunakan sebagai material CRA. Pengujian non-destruktif berupa visual testing, liquid penetrant testing dan ultrasonic testing menunjukkan tidak terdapat cacat pengelasan pada deposisi lapisan CRA maupun antar-muka lapisan CRA dan base metal. Pengujian kekerasan Vickers menunjukkan NM625 memiliki nilai kekerasan 228 ±8,8 HV10 (layer 1) dan 231.6 ±10,8 HV10 (layer 2), sedangkan RW625 memiliki nilai kekerasan 203.4 ±8,1 HV10 (layer 1) dan 213.6 ±6,3 HV10. Kedua filler metal menghasilkan nilai Pitting Resistance Equivalent Number (PREN) yang sama 48, yang menunjukkan kedua filler metal memiliki properti ketahanan korosi yang sama.

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Section: Metodeunclassified

Pengujian Mekanis dan Korosi pada Weld Overlay Pipa API 5L X65 Hasil Pengelasan GTAW

Ariyanto,

Wibowo,

Rossbandrio

et al. 2023

JATRA

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“…The Inconel high strength is mainly due to solid solution hardening effect of refractory metals, niobium and molybdenum in a FCC austenitic γ matrix. Besides that, the good ductibility which accounts for its non-susceptibility to cracking upon solidification and contraction after welding [10,11]. These properties make it a material suitable for surface modification of oil and gas components, especially those made with high-strength and low alloy (HSLA) steel.…”

Section: Introductionmentioning

confidence: 99%

Development and Evaluation of the Internal Cladding Process of API 5L X70 Risers with Nickel-based superalloy 625 via PTA Welding

Silva

Dornelles

et al. 2021

Matéria (Rio J.)

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The Oil and gas exploration is one of the most strategic industrial sectors in the Brazilian economy. The discovery of deep water reserves adds more difficulty to the already problematic use of materials in equipment in extremely corrosive environments. With the objective of increasing the service life of the equipment, and consequently reducing the cost of maintenance and preventing against environmental catastrophes, it is common to use CRA claddings via welding processes, in which the nickel superalloy coatings stand out via the PTA welding process. In this context, the operation of internal cladding of risers becomes extremely complex due to the operational and metallurgical requirements imposed by the application. The present work aims at the development and empirical evaluation of the internal cladding procedure of risers with Nickelbased superalloy 625 via PTA welding process. From tests of cladding on plate, satisfactory preliminary parameters were reached for the performance of internal cladding tests on risers. From the adaptation of the welding parameters, comparative analyzes of three different procedures were carried out, with different weaving amplitude. Visual analysis and inspections were carried out via penetrating liquid and radiography, confirming the welding quality of all procedures performed. Still, proving the metallurgical quality of the developed procedures, analysis of chemical composition was carried out via EDX, presenting satisfactory results. Finally, a financial comparison of the process was elaborated, showing comparatively the consumption of powder and gas, and the time needed for internal cladding.

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“…Chromium prevents corrosion by forming a layer of Cr 2 O 3 , and molybdenum provides resistance to crevice and pitting corrosion [6]. Inconel 625 also has good ductility which accounts for its non-susceptibility to cracking upon solidification and contraction after welding [7,8]. These properties make Inconel 625 an essential alloy for applications in the marine, aerospace and petrol-chemical industries.…”

Section: Introductionmentioning

confidence: 99%

Consolidation mechanism, microstructural evolution and corrosion resistance of Inconel 625 coatings

Olakanmi

Malikongwa

Nyadongo

et al. 2020

Surface Engineering

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The inter-relationships between geometrical properties, microstructural characteristics and corrosion resistance on one hand and laser-material interaction parameter (α) on the other hand are examined. A laser-material interaction parameter within the range of 599 ≤ α ≤ 400 J.s g −1 mm −1 imparted optimum characteristics of microstructure, microhardness and corrosion resistance. The consolidation mechanism of the coatings indicates that this parameter ensures the formation of a double 'burn-in' macrostructure into the substrate which imparts non-porous, crack-free and a fine interfacial microstructure. This study provides guidance in designing Inconel 625 coatings of desirable microstructures and corrosion resistance.

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A study on the intergranular corrosion and pitting resistance of Inconel 625 coating by PTA-P

Cited by 13 publications

References 16 publications

Pengujian Mekanis dan Korosi pada Weld Overlay Pipa API 5L X65 Hasil Pengelasan GTAW

Pengujian Mekanis dan Korosi pada Weld Overlay Pipa API 5L X65 Hasil Pengelasan GTAW

Development and Evaluation of the Internal Cladding Process of API 5L X70 Risers with Nickel-based superalloy 625 via PTA Welding

Consolidation mechanism, microstructural evolution and corrosion resistance of Inconel 625 coatings

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